Electronic system protecting 3S battery pack from discharging and at the same time is a charger for these batteries. It allows you to build a safe battery pack that does not need to be charged with special Li-ion chargers. The 2 in 1 module will keep the cells in the best conditions, preventing them from overcharging and over-discharging. One module replaces the charger and the security module here. In addition, the system is equipped with a convenient and universal DC jack socket, contact plates for 18650 batteries and cables. Product features Short circuit protection. Overcharge protection. Over-discharge Protection. Overcurrent protection. They can be used for a variety of lithium cells. Compact dimensions and low weight Ensure safe use of the battery Technical data The maximum charging voltage of the cell: 4.2 +/- 0.25V Voltage cut-off below the threshold of 2.1V +/- 0.05V Charging voltage: 4.2V Dimensions: 35 x 7.6 x 2.2mm Maximum instantaneous output current 6A https://elecena.pl/product/22620933/3s-6a-12v-bms-pcm-pcb-li-ion-charging-protection-module-with-dc-socket 2023-02-23 https://elecena.pl/product/22620933/3s-6a-12v-bms-pcm-pcb-li-ion-charging-protection-module-with-dc-socket 2025-10-29